New design technique of controlling 2 quadrant DC motor drive

This paper proposes the controlling technique of DC motors which can determine the time response of speed,both no load and on load condition,less than 2 seconds. It is operated by 8 bit Binary Rate Multiplier (BRM) under the PI control process. The motor under test is 2 quadrants type. The BRM 8 bit are generated from 8 principle waveform by linear combination, finally 256 waves are attained. These waveforms are sent to control motor with required speed, It is known that BRM give low ripple, less than 1%. Hence, less noise disturbance to the system. These BRM can be applied to reverse motor direction with fast response or sudden stop. Energy fed to motor is also low but gives high efficiency.